Preventive Measures
-        Use
certified seeds or clean seed from a known source free from admixture of weed
seeds.
-        Avoid application of
un-decomposed organic manures as it contains viable weed seeds.
-         Cleaning seeds by dipping in
2% brine solution (salt solution) helps in the selection of high-density seeds
and separation of floating weed seeds.
-         Off-season ploughing after
rice harvest reduces weed seed replenishment.
-          Deep summer ploughing once
in three years